CN105597700A - Novel amino walnut shell adsorbent with efficient adsorption performance and preparation method thereof - Google Patents
Novel amino walnut shell adsorbent with efficient adsorption performance and preparation method thereof Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/345—Regenerating or reactivating using a particular desorbing compound or mixture
- B01J20/3475—Regenerating or reactivating using a particular desorbing compound or mixture in the liquid phase
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
- B01J2220/4825—Polysaccharides or cellulose materials, e.g. starch, chitin, sawdust, wood, straw, cotton
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4875—Sorbents characterised by the starting material used for their preparation the starting material being a waste, residue or of undefined composition
- B01J2220/4881—Residues from shells, e.g. eggshells, mollusk shells
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/22—Chromium or chromium compounds, e.g. chromates
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Abstract
The invention discloses a novel amino walnut shell adsorbent with efficient adsorption performance and a preparation method thereof. The novel adsorbent is used for adsorbing heavy metal ions in wastewater and is prepared based on research of adsorption material regeneration technology. The preparation process is mainly as follows: an amino walnut shell is prepared with a Sinkiang walnut shell as a basic material, epoxy chloropropane as an etherifying agent, N,N-dimethyl formamide as a solvent and triethylene tetramine as a crosslinking agent. Compared with an original Sinkiang walnut shell in the aspect of adsorbing heavy metal ions, the novel adsorbent has the advantages of high removal rate and large adsorbing capacity; as the novel adsorbent can be recycled, the cost is lowered and resources can be reasonably utilized in the aspect of economy; an effect of controlling waste with waste can be achieved by the novel adsorbent in the aspect of environment protection. The raw materials are readily available, and the novel adsorbent can provide theoretical foundation for application to purification treatment of heavy metal wastewater.
Description
Technical field
The invention belongs to technical field of waste water processing, relate in particular to a kind of amino core with high efficiency of additive capabilityPeach shell new adsorbent and preparation method thereof.
Background technology
Chromium is a kind of important environmental contaminants, and it is mainly derived from chemical industry, pottery, printing and dyeing, electronics industryThe waste water of discharging with industry such as processing chrome ore etc. It is the main compound with trivalent or sexavalence in water environmentForm exists, and its valence state has determined its toxicity, and toxicity that it is generally acknowledged Cr (VI) is 500 of Cr (III)Doubly, and valence state difference, its mobility and bioavailability are also different. Once if water body is by heavy metal chromium dirtDye, although its content is lower, contamination hazard is very obvious, and it can be done by the transmission of food chainWith, finally enter human body and produce biomagnification or biological concentration phenomenon, human health and environment are caused sternlyHeavily infringement. How to prepare a kind of new adsorbent, can either make rational use of resources, also can efficient adsorptionChromium in waste water is also realized reuse to waste water and the recycling of heavy metal chromium, has important reality meaningJustice.
Original Xinjiang walnut shell Adsorption of Heavy Metal Ions adsorbance is little, and regeneration rate is low, and cost is higher.
Summary of the invention
The object of the present invention is to provide a kind of amino walnut shell new adsorbent with high efficiency of additive capability andIts preparation method, is intended to solve original Xinjiang walnut shell Adsorption of Heavy Metal Ions adsorbance little, regeneration rateThe problem low, cost is higher.
The present invention is achieved in that a kind of amino walnut shell new adsorbent with high efficiency of additive capabilityPreparation method, described in there is the amino walnut shell new adsorbent of high efficiency of additive capability preparation method comprise withLower step:
Step 1, adds the epoxychloropropane etherifying agent of 10～30mL and the N of 10～30mL, N-dimethyl methylAmide solvent, in three mouthfuls of round-bottomed flasks of 5～10g walnut shell are housed, is controlled temperature at 60 DEG C and at thermostatted waterIn bath, stir, stir speed (S.S.) is 100r/min;
Step 2, after question response 30min, adding the triethylene tetramine crosslinking agent of 1～5mL, finishes rear useDistilled water cleans repeatedly to sample, obtains amino walnut shell sorbing material;
Step 3, amino walnut shell sorbing material carries out after adsorption treatment, adopts parsing agent to carry out in adsorbentDesorption and regeneration.
Further, according to Xinjiang walnut shell described in mass volume ratio: epoxychloropropane etherifying agent: N, N-diformazanBase formamide solvent: triethylene tetramine crosslinking agent=(1～2): (2～6): (2～6): (0.2～1).
Further, described parsing agent adopts the HCl solution of 0.1mol/L, soaks 2h, during adsorbent is washed tillProperty, dry, repeat the Cr waste water of 20mg/L to carry out adsorption treatment.
The preparation method further, with the amino walnut shell new adsorbent of high efficiency of additive capability comprisesFollowing steps:
Take Xinjiang walnut shell after 8g cleans, dries in three mouthfuls of round-bottomed flasks, toward wherein adding 20mLEpoxychloropropane etherifying agent, then add the DMF solvent of 20mL, be placed in uniform temperatureUnder thermostat water bath in stir, stir speed (S.S.) is 100r/min;
Toward the triethylene tetramine crosslinking agent that dropwise adds 4mL in three mouthfuls of round-bottomed flasks, stir after 2h, by sampleFrom three mouthfuls of round-bottomed flasks, take out, and repeatedly clean with distilled water, until pH is neutral, will filter with suction filtration machineLiquid is extracted out, then sample is put in electric drying oven with forced convection, at 120 DEG C, dries 5h, is cooled to room temperatureAfter to put into drier for subsequent use.
The preparation method further, with the amino walnut shell new adsorbent of high efficiency of additive capability comprisesFollowing steps:
Take Xinjiang walnut shell after 8g cleans, dries in three mouthfuls of round-bottomed flasks, toward wherein adding 15mLEpoxychloropropane etherifying agent, then add the DMF solvent of 15mL, be placed in uniform temperatureUnder thermostat water bath in stir, stir speed (S.S.) is 100r/min;
Toward the triethylene tetramine crosslinking agent that dropwise adds 3mL in three mouthfuls of round-bottomed flasks, stir after 2h, by sampleFrom three mouthfuls of round-bottomed flasks, take out, and repeatedly clean with distilled water, until pH is neutral, will filter with suction filtration machineLiquid is extracted out, then sample is put in electric drying oven with forced convection, at 120 DEG C, dries 5h, is cooled to room temperatureAfter to put into drier for subsequent use.
Another object of the present invention is to provide that to have the amino walnut shell of high efficiency of additive capability described in a kind of novelThe amino walnut shell new adsorbent of prepared by the preparation method of adsorbent have high efficiency of additive capability, described toolHave the amino walnut shell new adsorbent of high efficiency of additive capability to comprise according to mass volume ratio: Xinjiang walnut shell:Epoxychloropropane etherifying agent: DMF solvent: triethylene tetramine crosslinking agent=1～2:2～6:2～6：0.2～1。
The amino walnut shell new adsorbent particle diameter further, with high efficiency of additive capability is0.5～1.0mm。
Another object of the present invention is to provide a kind of chemical wastewater treatment technique, described chemical wastewater treatment workDescribed in comprising, skill there is prepared by the preparation method of the amino walnut shell new adsorbent of high efficiency of additive capability havingThe amino walnut shell new adsorbent of high efficiency of additive capability.
Another object of the present invention is to provide a kind of ceramic wastewater treatment process, described ceramic wastewater is processed workDescribed in comprising, skill there is prepared by the preparation method of the amino walnut shell new adsorbent of high efficiency of additive capability havingThe amino walnut shell new adsorbent of high efficiency of additive capability.
Another object of the present invention is to provide a kind of electronics waste water treatment process, described electronics wastewater treatment workDescribed in comprising, skill there is prepared by the preparation method of the amino walnut shell new adsorbent of high efficiency of additive capability havingThe amino walnut shell new adsorbent of high efficiency of additive capability.
Amino walnut shell new adsorbent with high efficiency of additive capability provided by the invention and preparation method thereof,Lignocellulosic discarded object has wide material sources, cheap, the regeneration period is short, biodegradable and environmentFriendly etc. a little many, be important biomass resource, and application aspect environmental protection has become orderThe new trend of front research, has become the ideal chose of processing heavy metal wastewater thereby especially; Amino walnut shell absorptionMaterial is that natural adsorbent is carried out to chemical modification, amido functional group is incorporated into walnut shell surface and makesNew adsorbent. Compared with natural walnut shell, amino walnut shell has that specific area is large, removal effect is good etc.Feature, and adsorption capacity has also obtained improving widely; In the wastewater treatment of therefore, polluting at heavy metal chromiumThere is good application prospect. The effect of adsorbent of the present invention and original Xinjiang walnut shell Adsorption of Heavy Metal IonsFruit is compared, and has the advantages such as clearance is high, adsorbance is large, and can regeneration, at economic aspect not onlyCan reduced cost, and can rationally use resource; Aspect environmental protection, can realize " treatment of wastes with processes of wastes against one another "Effect. Raw materials wide material sources of the present invention, the new adsorbent making is in heavy metal wastewater thereby purified treatmentIn application theoretical foundation is provided. Amino walnut shell sorbing material carries out, after adsorption treatment, adsorbent being carried outDesorption and regeneration, and regeneration effect is better.
Brief description of the drawings
Fig. 1 is the amino walnut shell new adsorbent with high efficiency of additive capability that the embodiment of the present invention providesPreparation method's flow chart.
Fig. 2 is that the prepared amino walnut shell of the embodiment 1 that provides of the embodiment of the present invention and walnut shell are to Cr(VI) clearance figure.
Fig. 3 is the prepared amino walnut shell regeneration effect figure of embodiment 1 that the embodiment of the present invention provides.
Fig. 4 is that the prepared amino walnut shell of the embodiment 2 that provides of the embodiment of the present invention and walnut shell are to Cr(VI) clearance figure.
Fig. 5 is the prepared amino walnut shell regeneration effect figure of embodiment 2 that the embodiment of the present invention provides.
Fig. 6 be the prepared amino walnut shell new adsorbent of the embodiment 1 that provides of the embodiment of the present invention doublyScanning electron microscope (SEM) photograph.
Fig. 7 is the red of the prepared amino walnut shell new adsorbent of the embodiment 1 that provides of the embodiment of the present inventionExternal spectrum figure.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment,The present invention is further elaborated. Should be appreciated that specific embodiment described herein only in order toExplain the present invention, be not intended to limit the present invention.
Below in conjunction with accompanying drawing, application principle of the present invention is explained in detail.
The amino walnut shell new adsorbent with high efficiency of additive capability of the embodiment of the present invention, according to mass bodyLong-pending ratio comprises: Xinjiang walnut shell: epoxychloropropane etherifying agent: DMF solvent: triethyleneTetramine crosslinking agent=1～2:2～6:2～6:0.2～1; Particle diameter is 0.5～1.0mm.
As shown in Figure 1, the amino walnut shell new adsorbent with high efficiency of additive capability of the embodiment of the present inventionPreparation method comprise the following steps:
S101: add the epoxychloropropane etherifying agent of 20mL and the DMF solvent of 20mLIn three mouthfuls of round-bottomed flasks of 8g walnut shell are housed, control temperature and stir in thermostat water bath;
S102: after question response a period of time, dropwise adding the triethylene tetramine crosslinking agent of 4mL, according to matterAmount volume ratio comprises: Xinjiang walnut shell: epoxychloropropane etherifying agent: DMF solvent: threeEthene tetramine crosslinking agent=1～2:2～6:2～6:0.2～1, finishes sample to be cleaned repeatedly with distilled water afterwards,Obtain amino walnut shell sorbing material;
S103: amino walnut shell sorbing material carries out, after adsorption treatment, adsorbent being carried out to desorption and regeneration, separatesVapor adopts the HCl solution of 0.1mol/L, soaks 2h, and adsorbent is washed till to neutrality, dries, and repeats 20mg/LCr (VI) waste water carry out adsorption treatment, solve regeneration situation.
By adding epoxychloropropane, DMF and triethylene tetramine, the amino of generation is drawnEnter to walnut shell surface.
Below in conjunction with specific embodiment, application principle of the present invention is further described.
Embodiment 1:
1, take Xinjiang walnut shell after 8g cleans, dries in three mouthfuls of round-bottomed flasks, toward wherein adding 20mLEpoxychloropropane etherifying agent, then add the DMF solvent of 20mL, be placed in uniform temperatureUnder thermostat water bath in stir, stir speed (S.S.) is 100r/min.
2, toward the triethylene tetramine crosslinking agent that dropwise adds 4mL in three mouthfuls of round-bottomed flasks, stir after 2h, willSample takes out from three mouthfuls of round-bottomed flasks, and repeatedly cleans with distilled water, until pH is neutral, uses suction filtration machineFiltrate is extracted out, then sample is put in electric drying oven with forced convection, at 120 DEG C, dry 5h, be cooled toAfter room temperature, put into drier for subsequent use.
Embodiment 2:
1, take Xinjiang walnut shell after 8g cleans, dries in three mouthfuls of round-bottomed flasks, toward wherein adding 15mLEpoxychloropropane etherifying agent, then add the DMF solvent of 15mL, be placed in uniform temperatureUnder thermostat water bath in stir, stir speed (S.S.) is 100r/min;
2, toward the triethylene tetramine crosslinking agent that dropwise adds 3mL in three mouthfuls of round-bottomed flasks, stir after 2h, willSample takes out from three mouthfuls of round-bottomed flasks, and repeatedly cleans with distilled water, until pH is neutral, uses suction filtration machineFiltrate is extracted out, then sample is put in electric drying oven with forced convection, at 120 DEG C, dry 5h, be cooled toAfter room temperature, put into drier for subsequent use.
Below by walnut shell, two kinds of ejusdem generis Cr of sorbent treatment of amino walnut shell (VI) waste water,Its adsorption effect is compared simultaneously.
Experiment 1
(1) 50mL initial concentration is respectively to 5,20,40,80,100,120,160 and 200mg/LCr (VI) waste water in 100mL conical flask, regulating the pH value of water sample is 1.0, adds walnut shell 0.5g,Be placed in the oscillator of 25 DEG C, under 150r/min, adsorb after 180min, go filtrate to measure Cr's (VI)Concentration, its removal effect as shown in Figure 2.
(2) 50mL initial concentration is respectively to 5,20,40,80,100,120,160 and 200mg/LCr (VI) waste water in 100mL conical flask, regulating the pH value of water sample is 1.0, adds embodiment 1The amino walnut shell 0.5g of middle preparation, is placed in the oscillator of 25 DEG C, under 150r/min, adsorbs 180minAfter, go filtrate to measure the concentration of Cr (VI), its removal effect is as shown in Figure 2.
(3) amino walnut shell embodiment 1 being made carries out desorption and regeneration, resolves agent and selects 0.1mol/L'sHCl solution, soaks after 2h, and adsorbent is washed till to neutrality, dries, and repeats the Cr (VI) to 20mg/LWaste water carries out adsorption treatment, and its recycling effect as shown in Figure 3.
As can be known from Fig. 2, when add a certain amount of adsorbent in 50mL waste water, when Cr (VI) is lowerIts removal effect is better. Therefore, medicine is adjusted absorption in time according to Cr (VI) change in concentration in actual applicationsAgent consumption. In Fig. 3, when after amino walnut shell recycling 4 times, Cr (VI) residual concentration is 0.48mg/L,Meet the discharge standard of Cr in industrial wastewater (VI), reuse after 5 times, its residual concentration is 1.9mg/L.The recycling number of times of visible amino walnut shell is 4 times.
Experiment 2
(1) 50mL initial concentration is respectively to 5,20,40,80,100,120,160 and 200mg/LCr (VI) waste water in 100mL conical flask, regulating the pH value of water sample is 1.0, adds walnut shell 0.5g,Be placed in the oscillator of 25 DEG C, under 150r/min, adsorb after 180min, go filtrate to measure Cr's (VI)Concentration, its removal effect as shown in Figure 4.
(2) 50mL initial concentration is respectively to 5,20,40,80,100,120,160 and 200mg/LCr (VI) waste water in 100mL conical flask, regulating the pH value of water sample is 1.0, adds embodiment 2The amino walnut shell 0.5g of middle preparation, is placed in the oscillator of 25 DEG C, under 150r/min, adsorbs 180minAfter, go filtrate to measure the concentration of Cr (VI), its removal effect is as shown in Figure 4.
(3) amino walnut shell embodiment 2 being made carries out desorption and regeneration, resolves agent and selects 0.1mol/L'sHCl solution, soaks after 2h, and adsorbent is washed till to neutrality, dries, and repeats the Cr (VI) to 20mg/LWaste water carries out adsorption treatment, and its recycling effect as shown in Figure 5.
As can be known from Fig. 4, when add a certain amount of adsorbent in 50mL waste water, when Cr (VI) is lowerIts removal effect is better. Therefore, medicine is adjusted absorption in time according to Cr (VI) change in concentration in actual applicationsAgent consumption. In Fig. 5, when after amino walnut shell recycling 3 times, Cr (VI) residual concentration is 0.5mg/L,Meet the discharge standard of Cr in industrial wastewater (VI), reuse after 4 times, its residual concentration is 0.58mg/L.The recycling number of times of visible amino walnut shell is 3 times.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, not all at thisAny amendment of doing within bright spirit and principle, be equal to and replace and improvement etc., all should be included in the present inventionProtection domain within.
Claims (10)
1. a preparation method with the amino walnut shell new adsorbent of high efficiency of additive capability, its feature existsIn, described in there is the amino walnut shell new adsorbent of high efficiency of additive capability preparation method comprise the following steps:
Step 1, adds the epoxychloropropane etherifying agent of 10～30mL and the N of 10～30mL, N-dimethyl methylAmide solvent, in three mouthfuls of round-bottomed flasks of 5～10g walnut shell are housed, is controlled temperature at 60 DEG C and at thermostatted waterIn bath, stir, stir speed (S.S.) is 100r/min;
Step 2, after question response 30min, adding the triethylene tetramine crosslinking agent of 1～5mL, finishes rear useDistilled water cleans repeatedly to sample, obtains amino walnut shell sorbing material;
Step 3, amino walnut shell sorbing material carries out after adsorption treatment, adopts parsing agent to carry out in adsorbentDesorption and regeneration.
2. the preparation of the amino walnut shell new adsorbent with high efficiency of additive capability as claimed in claim 1Method, is characterized in that, according to Xinjiang walnut shell described in mass volume ratio: epoxychloropropane etherifying agent: N, N-Solvent dimethylformamide: triethylene tetramine crosslinking agent=1～2:2～6:2～6:0.2～1.
3. the preparation of the amino walnut shell new adsorbent with high efficiency of additive capability as claimed in claim 1Method, is characterized in that, described parsing agent adopts the HCl solution of 0.1mol/L, soaks 2h, by adsorbentBe washed till neutrality, dry, repeat the Cr waste water of 20mg/L to carry out adsorption treatment.
4. the preparation of the amino walnut shell new adsorbent with high efficiency of additive capability as claimed in claim 1Method, is characterized in that, described in there is the preparation side of the amino walnut shell new adsorbent of high efficiency of additive capabilityMethod comprises the following steps:
Take Xinjiang walnut shell after 8g cleans, dries in three mouthfuls of round-bottomed flasks, toward wherein adding 20mLEpoxychloropropane etherifying agent, then add the DMF solvent of 20mL, be placed in uniform temperatureUnder thermostat water bath in stir, stir speed (S.S.) is 100r/min;
Toward the triethylene tetramine crosslinking agent that dropwise adds 4mL in three mouthfuls of round-bottomed flasks, stir after 2h, by sampleFrom three mouthfuls of round-bottomed flasks, take out, and repeatedly clean with distilled water, until pH is neutral, will filter with suction filtration machineLiquid is extracted out, then sample is put in electric drying oven with forced convection, at 120 DEG C, dries 5h, is cooled to room temperatureAfter to put into drier for subsequent use.
5. the preparation of the amino walnut shell new adsorbent with high efficiency of additive capability as claimed in claim 1Method, is characterized in that, described in there is the preparation side of the amino walnut shell new adsorbent of high efficiency of additive capabilityMethod comprises the following steps:
Take Xinjiang walnut shell after 8g cleans, dries in three mouthfuls of round-bottomed flasks, toward wherein adding 15mLEpoxychloropropane etherifying agent, then add the DMF solvent of 15mL, be placed in uniform temperatureUnder thermostat water bath in stir, stir speed (S.S.) is 100r/min;
Toward the triethylene tetramine crosslinking agent that dropwise adds 3mL in three mouthfuls of round-bottomed flasks, stir after 2h, by sampleFrom three mouthfuls of round-bottomed flasks, take out, and repeatedly clean with distilled water, until pH is neutral, will filter with suction filtration machineLiquid is extracted out, then sample is put in electric drying oven with forced convection, at 120 DEG C, dries 5h, is cooled to room temperatureAfter to put into drier for subsequent use.
6. one kind has the system of the amino walnut shell new adsorbent of high efficiency of additive capability as claimed in claim 1The amino walnut shell new adsorbent of prepared by Preparation Method have high efficiency of additive capability, is characterized in that, described inThe amino walnut shell new adsorbent with high efficiency of additive capability comprises according to mass volume ratio: Xinjiang walnut shell:Epoxychloropropane etherifying agent: DMF solvent: triethylene tetramine crosslinking agent=1～2:2～6:2～6：0.2～1。
7. the amino walnut shell new adsorbent with high efficiency of additive capability as claimed in claim 6, its spyLevy and be, described in there is high efficiency of additive capability amino walnut shell new adsorbent particle diameter be 0.5～1.0mm.
8. a chemical wastewater treatment technique, is characterized in that, described chemical wastewater treatment technique comprises rightDescribed in requirement 1-5 any one, there is the preparation method of the amino walnut shell new adsorbent of high efficiency of additive capabilityThe amino walnut shell new adsorbent with high efficiency of additive capability of preparation.
9. a ceramic wastewater treatment process, is characterized in that, described ceramic wastewater treatment process comprises rightDescribed in requirement 1-5 any one, there is the preparation method of the amino walnut shell new adsorbent of high efficiency of additive capabilityThe amino walnut shell new adsorbent with high efficiency of additive capability of preparation.
10. an electronics waste water treatment process, is characterized in that, described electronics waste water treatment process comprises powerProfit requires to have described in 1-5 any one the preparation side of the amino walnut shell new adsorbent of high efficiency of additive capabilityThe amino walnut shell new adsorbent of what legal system was standby have high efficiency of additive capability.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106268674A (en) * | 2016-09-07 | 2017-01-04 | 济南大学 | A kind of preparation of TEPA modified magnetic palm bark adsorbent |
| CN110801814A (en) * | 2019-11-01 | 2020-02-18 | 华东交通大学 | Preparation method of magnetic amino walnut shell biochar novel adsorbent |
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Application publication date: 20160525 |